Sir William Crookes OM PRS(1832-1919)

Sir William Crookes OM PRS (17 June 1832 – 4 April 1919) was an English chemist and physicist who attended the Royal College of Chemistry, London, and worked on spectroscopy. He was a pioneer of vacuum tubes, inventing the Crookes tube which was made in 1875. Crookes was the inventor of the Crookes radiometer, which today is made and sold as a novelty item.